Differentiate between tube nucleus and generative nucleus
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The tube nucleus guides the pollen tube into the female embryo sac. The generative nuclei are the male gametes that will fuse with the female nuclei in the embryo sac. The pollen tube enters through the micropyle to deposit the sperm cells.
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TUBE NUCLEUS :
the one of the two nuclei formed by mitotic division of a microspore during the formation of a pollen grain that is held to control subsequent growth of the pollen tube and that does not divide again
GENERATIVE NUCLEUS :
the one of the two nuclei resulting from the first division in the pollen grain of a seed plant that gives rise to sperm nuclei
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